Experimental Validation of Piezoelectric Energy-Harvesting Device for Built Infrastructure Applications

Abstract

Vibration energy harvesting devices are increasingly becoming more efficient and useful. The performance of such devices for energy harvesting from vibrations of civil infrastructure can be theoretically quantified and energy harvesting under harmonic loadings can be validated experimentally. Experimental validation of such devices for civil infrastructure applications, such as bridges, remain an important but more complex and challenging issue, in part due to

Scour Damage Detection and Structural Health Monitoring of a Laboratory-Scaled Bridge Using a Vibration Energy Harvesting Device

“…The electromechanical behaviour of a piezoelectric EHD can be represented by the two linearly coupled Ordinary Differential Equations (ODEs) [16,21,25] mhz¨+chtruez˙+khz−θV=−mhy¨b θtruez˙+CptrueV˙+1RlV=0 where mh, ch, and kh are the mass, damping and stiffness of the harvester respectively; z is the relative dynamic displacement of the tip mass mh, with over-dots referring to differentiation with respect to time; yb is the base excitation of the harvester and θ, V, Cp and Rl refer to the electromechanical coupling, voltage generated, piezoceramic capacitance and load resistance, respectively. The natural frequency of the harvester in units of …”

“…Vibration-based EHDs can use ambient vibrations of a host structure to produce a feasible source of power for such sensor nodes [18]. Suitable proposed host structures for such EHDs include high-rise buildings [19] and tunnels [20] but the majority of studies thus far investigate the use of bridge structures as a host [21]. Piezoelectric EHDs are one such device and have the potential to harvest energy using operational bridge conditions, typically using the forced vibration bridge response due to vehicle passages [16,22,23].…”

Modelling and parameter identification of electromechanical systems for energy harvesting and sensing

“…To date, most piezoelectric vibration-based energy harvesting (EH) devices are designed as linear resonators that work efficiently within a limited bandwidth near the targeted resonant frequency [90]. If the identified excitation frequency slightly shifts with respect to the resonant frequency of the harvester, then its performance can decrease drastically [91,92,93,94]. Many factors can jeopardize the optimal tuning.…”

The Characterizations of La<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> Thin Films Deposited by Pulsed Laser Deposition at Different Annealing Temperatures

“…In the past decades, many experimental and theoretical studies were blessed to the study of perovskite materials because of their interesting ferroelectric, Piezoelectric, and dielectric properties [1][2][3]. These interesting properties make LTO a material of choice for extensive technological applications such as amplifiers and aerospace applications [4,5], Transducers device [6], sensors, wireless communications [7][8][9], And Built Infrastructure applications [10]. La 2 Ti 2 O 7 is a part of the layered perovskite family [11], which has the highest Curie temperature with excellent piezoelectric and electro-optic properties.…”